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Linux 3.13-rc2
[deliverable/linux.git] / fs / xfs / xfs_ioctl32.c
CommitLineData
1da177e4 1/*
7b718769
NS		 2 * Copyright (c) 2004-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
1da177e4 4 *
7b718769
NS		 5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
1da177e4
LT		 7 * published by the Free Software Foundation.
8 *
7b718769
NS		 9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
1da177e4 13 *
7b718769
NS		 14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
1da177e4 17 */
1da177e4 18#include <linux/compat.h>
1da177e4 19#include <linux/ioctl.h>
62e194ec 20#include <linux/mount.h>
5a0e3ad6 21#include <linux/slab.h>
1da177e4 22#include <asm/uaccess.h>
1da177e4 23#include "xfs.h"
1da177e4 24#include "xfs_fs.h"
a4fbe6ab 25#include "xfs_format.h"
239880ef
DC		 26#include "xfs_log_format.h"
27#include "xfs_trans_resv.h"
faa63e95
MM		 28#include "xfs_sb.h"
29#include "xfs_ag.h"
faa63e95 30#include "xfs_mount.h"
1da177e4 31#include "xfs_vnode.h"
faa63e95
MM		 32#include "xfs_inode.h"
33#include "xfs_itable.h"
34#include "xfs_error.h"
d5547f9f 35#include "xfs_fsops.h"
471d5910 36#include "xfs_alloc.h"
37#include "xfs_rtalloc.h"
ebeecd2b 38#include "xfs_attr.h"
d5547f9f 39#include "xfs_ioctl.h"
a8272ce0 40#include "xfs_ioctl32.h"
0b1b213f 41#include "xfs_trace.h"
1da177e4 42
526c420c
ES		 43#define _NATIVE_IOC(cmd, type) \
44 _IOC(_IOC_DIR(cmd), _IOC_TYPE(cmd), _IOC_NR(cmd), sizeof(type))
45
ffae263a 46#ifdef BROKEN_X86_ALIGNMENT
d5547f9f 47STATIC int
48xfs_compat_flock64_copyin(
49 xfs_flock64_t *bf,
50 compat_xfs_flock64_t __user *arg32)
526c420c 51{
d5547f9f 52 if (get_user(bf->l_type, &arg32->l_type) ||
53 get_user(bf->l_whence, &arg32->l_whence) ||
54 get_user(bf->l_start, &arg32->l_start) ||
55 get_user(bf->l_len, &arg32->l_len) ||
56 get_user(bf->l_sysid, &arg32->l_sysid) ||
57 get_user(bf->l_pid, &arg32->l_pid) ||
58 copy_from_user(bf->l_pad, &arg32->l_pad, 4*sizeof(u32)))
59 return -XFS_ERROR(EFAULT);
60 return 0;
526c420c
ES		 61}
62
d5547f9f 63STATIC int
64xfs_compat_ioc_fsgeometry_v1(
65 struct xfs_mount *mp,
66 compat_xfs_fsop_geom_v1_t __user *arg32)
547e00c3 67{
d5547f9f 68 xfs_fsop_geom_t fsgeo;
69 int error;
547e00c3 70
d5547f9f 71 error = xfs_fs_geometry(mp, &fsgeo, 3);
72 if (error)
73 return -error;
74 /* The 32-bit variant simply has some padding at the end */
75 if (copy_to_user(arg32, &fsgeo, sizeof(struct compat_xfs_fsop_geom_v1)))
76 return -XFS_ERROR(EFAULT);
77 return 0;
547e00c3
MM		 78}
79
471d5910 80STATIC int
81xfs_compat_growfs_data_copyin(
82 struct xfs_growfs_data *in,
83 compat_xfs_growfs_data_t __user *arg32)
84{
85 if (get_user(in->newblocks, &arg32->newblocks) ||
86 get_user(in->imaxpct, &arg32->imaxpct))
87 return -XFS_ERROR(EFAULT);
88 return 0;
89}
90
91STATIC int
92xfs_compat_growfs_rt_copyin(
93 struct xfs_growfs_rt *in,
94 compat_xfs_growfs_rt_t __user *arg32)
95{
96 if (get_user(in->newblocks, &arg32->newblocks) ||
97 get_user(in->extsize, &arg32->extsize))
98 return -XFS_ERROR(EFAULT);
99 return 0;
100}
101
d5547f9f 102STATIC int
103xfs_inumbers_fmt_compat(
104 void __user *ubuffer,
105 const xfs_inogrp_t *buffer,
106 long count,
107 long *written)
faa63e95 108{
d5547f9f 109 compat_xfs_inogrp_t __user *p32 = ubuffer;
110 long i;
faa63e95
MM		 111
112 for (i = 0; i < count; i++) {
113 if (put_user(buffer[i].xi_startino, &p32[i].xi_startino) ||
114 put_user(buffer[i].xi_alloccount, &p32[i].xi_alloccount) ||
115 put_user(buffer[i].xi_allocmask, &p32[i].xi_allocmask))
d5547f9f 116 return -XFS_ERROR(EFAULT);
faa63e95
MM		 117 }
118 *written = count * sizeof(*p32);
119 return 0;
120}
121
1da177e4 122#else
faa63e95 123#define xfs_inumbers_fmt_compat xfs_inumbers_fmt
e5d412f1 124#endif /* BROKEN_X86_ALIGNMENT */
faa63e95 125
e94fc4a4 126STATIC int
127xfs_ioctl32_bstime_copyin(
128 xfs_bstime_t *bstime,
129 compat_xfs_bstime_t __user *bstime32)
130{
131 compat_time_t sec32; /* tv_sec differs on 64 vs. 32 */
132
133 if (get_user(sec32, &bstime32->tv_sec) ||
134 get_user(bstime->tv_nsec, &bstime32->tv_nsec))
135 return -XFS_ERROR(EFAULT);
136 bstime->tv_sec = sec32;
137 return 0;
138}
139
140/* xfs_bstat_t has differing alignment on intel, & bstime_t sizes everywhere */
141STATIC int
142xfs_ioctl32_bstat_copyin(
143 xfs_bstat_t *bstat,
144 compat_xfs_bstat_t __user *bstat32)
145{
146 if (get_user(bstat->bs_ino, &bstat32->bs_ino) ||
147 get_user(bstat->bs_mode, &bstat32->bs_mode) ||
148 get_user(bstat->bs_nlink, &bstat32->bs_nlink) ||
149 get_user(bstat->bs_uid, &bstat32->bs_uid) ||
150 get_user(bstat->bs_gid, &bstat32->bs_gid) ||
151 get_user(bstat->bs_rdev, &bstat32->bs_rdev) ||
152 get_user(bstat->bs_blksize, &bstat32->bs_blksize) ||
153 get_user(bstat->bs_size, &bstat32->bs_size) ||
154 xfs_ioctl32_bstime_copyin(&bstat->bs_atime, &bstat32->bs_atime) ||
155 xfs_ioctl32_bstime_copyin(&bstat->bs_mtime, &bstat32->bs_mtime) ||
156 xfs_ioctl32_bstime_copyin(&bstat->bs_ctime, &bstat32->bs_ctime) ||
157 get_user(bstat->bs_blocks, &bstat32->bs_size) ||
158 get_user(bstat->bs_xflags, &bstat32->bs_size) ||
159 get_user(bstat->bs_extsize, &bstat32->bs_extsize) ||
160 get_user(bstat->bs_extents, &bstat32->bs_extents) ||
161 get_user(bstat->bs_gen, &bstat32->bs_gen) ||
6743099c
AM		 162 get_user(bstat->bs_projid_lo, &bstat32->bs_projid_lo) ||
163 get_user(bstat->bs_projid_hi, &bstat32->bs_projid_hi) ||
e94fc4a4 164 get_user(bstat->bs_dmevmask, &bstat32->bs_dmevmask) ||
165 get_user(bstat->bs_dmstate, &bstat32->bs_dmstate) ||
166 get_user(bstat->bs_aextents, &bstat32->bs_aextents))
167 return -XFS_ERROR(EFAULT);
168 return 0;
169}
170
faa63e95
MM		 171/* XFS_IOC_FSBULKSTAT and friends */
172
d5547f9f 173STATIC int
174xfs_bstime_store_compat(
175 compat_xfs_bstime_t __user *p32,
176 const xfs_bstime_t *p)
faa63e95 177{
d5547f9f 178 __s32 sec32;
faa63e95
MM		 179
180 sec32 = p->tv_sec;
181 if (put_user(sec32, &p32->tv_sec) ||
182 put_user(p->tv_nsec, &p32->tv_nsec))
d5547f9f 183 return -XFS_ERROR(EFAULT);
faa63e95
MM		 184 return 0;
185}
186
65fbaf24 187/* Return 0 on success or positive error (to xfs_bulkstat()) */
d5547f9f 188STATIC int
189xfs_bulkstat_one_fmt_compat(
faa63e95 190 void __user *ubuffer,
65fbaf24 191 int ubsize,
192 int *ubused,
faa63e95
MM		 193 const xfs_bstat_t *buffer)
194{
d5547f9f 195 compat_xfs_bstat_t __user *p32 = ubuffer;
faa63e95 196
65fbaf24 197 if (ubsize < sizeof(*p32))
198 return XFS_ERROR(ENOMEM);
199
200 if (put_user(buffer->bs_ino, &p32->bs_ino) ||
201 put_user(buffer->bs_mode, &p32->bs_mode) ||
202 put_user(buffer->bs_nlink, &p32->bs_nlink) ||
203 put_user(buffer->bs_uid, &p32->bs_uid) ||
204 put_user(buffer->bs_gid, &p32->bs_gid) ||
205 put_user(buffer->bs_rdev, &p32->bs_rdev) ||
206 put_user(buffer->bs_blksize, &p32->bs_blksize) ||
207 put_user(buffer->bs_size, &p32->bs_size) ||
faa63e95
MM		 208 xfs_bstime_store_compat(&p32->bs_atime, &buffer->bs_atime) ||
209 xfs_bstime_store_compat(&p32->bs_mtime, &buffer->bs_mtime) ||
210 xfs_bstime_store_compat(&p32->bs_ctime, &buffer->bs_ctime) ||
65fbaf24 211 put_user(buffer->bs_blocks, &p32->bs_blocks) ||
212 put_user(buffer->bs_xflags, &p32->bs_xflags) ||
213 put_user(buffer->bs_extsize, &p32->bs_extsize) ||
214 put_user(buffer->bs_extents, &p32->bs_extents) ||
215 put_user(buffer->bs_gen, &p32->bs_gen) ||
216 put_user(buffer->bs_projid, &p32->bs_projid) ||
6743099c 217 put_user(buffer->bs_projid_hi, &p32->bs_projid_hi) ||
65fbaf24 218 put_user(buffer->bs_dmevmask, &p32->bs_dmevmask) ||
219 put_user(buffer->bs_dmstate, &p32->bs_dmstate) ||
faa63e95 220 put_user(buffer->bs_aextents, &p32->bs_aextents))
65fbaf24 221 return XFS_ERROR(EFAULT);
222 if (ubused)
223 *ubused = sizeof(*p32);
224 return 0;
faa63e95
MM		 225}
226
2ee4fa5c 227STATIC int
228xfs_bulkstat_one_compat(
229 xfs_mount_t *mp, /* mount point for filesystem */
230 xfs_ino_t ino, /* inode number to get data for */
231 void __user *buffer, /* buffer to place output in */
232 int ubsize, /* size of buffer */
2ee4fa5c 233 int *ubused, /* bytes used by me */
2ee4fa5c 234 int *stat) /* BULKSTAT_RV_... */
235{
236 return xfs_bulkstat_one_int(mp, ino, buffer, ubsize,
7b6259e7 237 xfs_bulkstat_one_fmt_compat,
7dce11db 238 ubused, stat);
2ee4fa5c 239}
240
faa63e95
MM		 241/* copied from xfs_ioctl.c */
242STATIC int
2ee4fa5c 243xfs_compat_ioc_bulkstat(
244 xfs_mount_t *mp,
245 unsigned int cmd,
246 compat_xfs_fsop_bulkreq_t __user *p32)
1da177e4 247{
1da177e4 248 u32 addr;
faa63e95
MM		 249 xfs_fsop_bulkreq_t bulkreq;
250 int count; /* # of records returned */
251 xfs_ino_t inlast; /* last inode number */
252 int done;
253 int error;
254
255 /* done = 1 if there are more stats to get and if bulkstat */
256 /* should be called again (unused here, but used in dmapi) */
1da177e4 257
faa63e95 258 if (!capable(CAP_SYS_ADMIN))
d5547f9f 259 return -XFS_ERROR(EPERM);
faa63e95
MM		 260
261 if (XFS_FORCED_SHUTDOWN(mp))
262 return -XFS_ERROR(EIO);
263
264 if (get_user(addr, &p32->lastip))
d5547f9f 265 return -XFS_ERROR(EFAULT);
faa63e95
MM		 266 bulkreq.lastip = compat_ptr(addr);
267 if (get_user(bulkreq.icount, &p32->icount) ||
268 get_user(addr, &p32->ubuffer))
d5547f9f 269 return -XFS_ERROR(EFAULT);
faa63e95
MM		 270 bulkreq.ubuffer = compat_ptr(addr);
271 if (get_user(addr, &p32->ocount))
d5547f9f 272 return -XFS_ERROR(EFAULT);
faa63e95 273 bulkreq.ocount = compat_ptr(addr);
1da177e4 274
faa63e95
MM		 275 if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
276 return -XFS_ERROR(EFAULT);
277
278 if ((count = bulkreq.icount) <= 0)
279 return -XFS_ERROR(EINVAL);
280
cd57e594
LM		 281 if (bulkreq.ubuffer == NULL)
282 return -XFS_ERROR(EINVAL);
283
af819d27 284 if (cmd == XFS_IOC_FSINUMBERS_32) {
faa63e95
MM		 285 error = xfs_inumbers(mp, &inlast, &count,
286 bulkreq.ubuffer, xfs_inumbers_fmt_compat);
af819d27 287 } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
288 int res;
289
290 error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
8d2a5e6e 291 sizeof(compat_xfs_bstat_t), NULL, &res);
af819d27 292 } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
faa63e95 293 error = xfs_bulkstat(mp, &inlast, &count,
7dce11db
CH		 294 xfs_bulkstat_one_compat, sizeof(compat_xfs_bstat_t),
295 bulkreq.ubuffer, &done);
af819d27 296 } else
297 error = XFS_ERROR(EINVAL);
faa63e95
MM		 298 if (error)
299 return -error;
300
301 if (bulkreq.ocount != NULL) {
302 if (copy_to_user(bulkreq.lastip, &inlast,
303 sizeof(xfs_ino_t)))
304 return -XFS_ERROR(EFAULT);
305
306 if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
307 return -XFS_ERROR(EFAULT);
308 }
309
310 return 0;
1da177e4 311}
faa63e95 312
d5547f9f 313STATIC int
314xfs_compat_handlereq_copyin(
315 xfs_fsop_handlereq_t *hreq,
316 compat_xfs_fsop_handlereq_t __user *arg32)
1fa503df 317{
d5547f9f 318 compat_xfs_fsop_handlereq_t hreq32;
319
320 if (copy_from_user(&hreq32, arg32, sizeof(compat_xfs_fsop_handlereq_t)))
321 return -XFS_ERROR(EFAULT);
322
323 hreq->fd = hreq32.fd;
324 hreq->path = compat_ptr(hreq32.path);
325 hreq->oflags = hreq32.oflags;
326 hreq->ihandle = compat_ptr(hreq32.ihandle);
327 hreq->ihandlen = hreq32.ihandlen;
328 hreq->ohandle = compat_ptr(hreq32.ohandle);
329 hreq->ohandlen = compat_ptr(hreq32.ohandlen);
330
331 return 0;
1fa503df
MM		 332}
333
ab596ad8
CH		 334STATIC struct dentry *
335xfs_compat_handlereq_to_dentry(
336 struct file *parfilp,
337 compat_xfs_fsop_handlereq_t *hreq)
ebeecd2b 338{
ab596ad8
CH		 339 return xfs_handle_to_dentry(parfilp,
340 compat_ptr(hreq->ihandle), hreq->ihandlen);
ebeecd2b 341}
342
343STATIC int
344xfs_compat_attrlist_by_handle(
ab596ad8
CH		 345 struct file *parfilp,
346 void __user *arg)
ebeecd2b 347{
348 int error;
349 attrlist_cursor_kern_t *cursor;
350 compat_xfs_fsop_attrlist_handlereq_t al_hreq;
ab596ad8 351 struct dentry *dentry;
ebeecd2b 352 char *kbuf;
353
354 if (!capable(CAP_SYS_ADMIN))
355 return -XFS_ERROR(EPERM);
356 if (copy_from_user(&al_hreq, arg,
357 sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
358 return -XFS_ERROR(EFAULT);
359 if (al_hreq.buflen > XATTR_LIST_MAX)
360 return -XFS_ERROR(EINVAL);
361
362 /*
363 * Reject flags, only allow namespaces.
364 */
365 if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
366 return -XFS_ERROR(EINVAL);
367
ab596ad8
CH		 368 dentry = xfs_compat_handlereq_to_dentry(parfilp, &al_hreq.hreq);
369 if (IS_ERR(dentry))
370 return PTR_ERR(dentry);
ebeecd2b 371
ab596ad8 372 error = -ENOMEM;
fdd3ccee
DC		 373 kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP);
374 if (!kbuf)
375 goto out_dput;
ebeecd2b 376
377 cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
ab596ad8 378 error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
ebeecd2b 379 al_hreq.flags, cursor);
380 if (error)
381 goto out_kfree;
382
383 if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
384 error = -EFAULT;
385
fdd3ccee
DC		 386out_kfree:
387 kmem_free(kbuf);
388out_dput:
ab596ad8
CH		 389 dput(dentry);
390 return error;
ebeecd2b 391}
392
28750975 393STATIC int
394xfs_compat_attrmulti_by_handle(
ab596ad8
CH		 395 struct file *parfilp,
396 void __user *arg)
28750975 397{
398 int error;
399 compat_xfs_attr_multiop_t *ops;
400 compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
ab596ad8 401 struct dentry *dentry;
28750975 402 unsigned int i, size;
a9273ca5 403 unsigned char *attr_name;
28750975 404
405 if (!capable(CAP_SYS_ADMIN))
406 return -XFS_ERROR(EPERM);
407 if (copy_from_user(&am_hreq, arg,
408 sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
409 return -XFS_ERROR(EFAULT);
410
fda168c2
ZW		 411 /* overflow check */
412 if (am_hreq.opcount >= INT_MAX / sizeof(compat_xfs_attr_multiop_t))
413 return -E2BIG;
414
ab596ad8
CH		 415 dentry = xfs_compat_handlereq_to_dentry(parfilp, &am_hreq.hreq);
416 if (IS_ERR(dentry))
417 return PTR_ERR(dentry);
28750975 418
419 error = E2BIG;
420 size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
421 if (!size || size > 16 * PAGE_SIZE)
ab596ad8 422 goto out_dput;
28750975 423
0e639bde
LZ		 424 ops = memdup_user(compat_ptr(am_hreq.ops), size);
425 if (IS_ERR(ops)) {
426 error = PTR_ERR(ops);
ab596ad8 427 goto out_dput;
0e639bde 428 }
28750975 429
430 attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
431 if (!attr_name)
432 goto out_kfree_ops;
433
28750975 434 error = 0;
435 for (i = 0; i < am_hreq.opcount; i++) {
a9273ca5 436 ops[i].am_error = strncpy_from_user((char *)attr_name,
28750975 437 compat_ptr(ops[i].am_attrname),
438 MAXNAMELEN);
439 if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
440 error = -ERANGE;
441 if (ops[i].am_error < 0)
442 break;
443
444 switch (ops[i].am_opcode) {
445 case ATTR_OP_GET:
ab596ad8
CH		 446 ops[i].am_error = xfs_attrmulti_attr_get(
447 dentry->d_inode, attr_name,
28750975 448 compat_ptr(ops[i].am_attrvalue),
449 &ops[i].am_length, ops[i].am_flags);
450 break;
451 case ATTR_OP_SET:
a561be71 452 ops[i].am_error = mnt_want_write_file(parfilp);
62e194ec
CH		 453 if (ops[i].am_error)
454 break;
ab596ad8
CH		 455 ops[i].am_error = xfs_attrmulti_attr_set(
456 dentry->d_inode, attr_name,
28750975 457 compat_ptr(ops[i].am_attrvalue),
458 ops[i].am_length, ops[i].am_flags);
2a79f17e 459 mnt_drop_write_file(parfilp);
28750975 460 break;
461 case ATTR_OP_REMOVE:
a561be71 462 ops[i].am_error = mnt_want_write_file(parfilp);
62e194ec
CH		 463 if (ops[i].am_error)
464 break;
ab596ad8
CH		 465 ops[i].am_error = xfs_attrmulti_attr_remove(
466 dentry->d_inode, attr_name,
467 ops[i].am_flags);
2a79f17e 468 mnt_drop_write_file(parfilp);
28750975 469 break;
470 default:
471 ops[i].am_error = EINVAL;
472 }
473 }
474
475 if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
476 error = XFS_ERROR(EFAULT);
477
478 kfree(attr_name);
479 out_kfree_ops:
480 kfree(ops);
ab596ad8
CH		 481 out_dput:
482 dput(dentry);
28750975 483 return -error;
484}
485
710d62aa 486STATIC int
487xfs_compat_fssetdm_by_handle(
ab596ad8
CH		 488 struct file *parfilp,
489 void __user *arg)
710d62aa 490{
491 int error;
492 struct fsdmidata fsd;
493 compat_xfs_fsop_setdm_handlereq_t dmhreq;
ab596ad8 494 struct dentry *dentry;
710d62aa 495
496 if (!capable(CAP_MKNOD))
497 return -XFS_ERROR(EPERM);
498 if (copy_from_user(&dmhreq, arg,
499 sizeof(compat_xfs_fsop_setdm_handlereq_t)))
500 return -XFS_ERROR(EFAULT);
501
ab596ad8
CH		 502 dentry = xfs_compat_handlereq_to_dentry(parfilp, &dmhreq.hreq);
503 if (IS_ERR(dentry))
504 return PTR_ERR(dentry);
710d62aa 505
ab596ad8 506 if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) {
710d62aa 507 error = -XFS_ERROR(EPERM);
508 goto out;
509 }
510
511 if (copy_from_user(&fsd, compat_ptr(dmhreq.data), sizeof(fsd))) {
512 error = -XFS_ERROR(EFAULT);
513 goto out;
514 }
515
ab596ad8 516 error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask,
710d62aa 517 fsd.fsd_dmstate);
518
519out:
ab596ad8 520 dput(dentry);
710d62aa 521 return error;
522}
523
4d4be482
CH		 524long
525xfs_file_compat_ioctl(
526 struct file *filp,
527 unsigned cmd,
528 unsigned long p)
1da177e4 529{
496ad9aa 530 struct inode *inode = file_inode(filp);
4d4be482
CH		 531 struct xfs_inode *ip = XFS_I(inode);
532 struct xfs_mount *mp = ip->i_mount;
533 void __user *arg = (void __user *)p;
534 int ioflags = 0;
535 int error;
536
537 if (filp->f_mode & FMODE_NOCMTIME)
538 ioflags |= IO_INVIS;
539
cca28fb8 540 trace_xfs_file_compat_ioctl(ip);
1da177e4
LT		 541
542 switch (cmd) {
e5d412f1 543 /* No size or alignment issues on any arch */
1da177e4 544 case XFS_IOC_DIOINFO:
1da177e4 545 case XFS_IOC_FSGEOMETRY:
1da177e4
LT		 546 case XFS_IOC_FSGETXATTR:
547 case XFS_IOC_FSSETXATTR:
548 case XFS_IOC_FSGETXATTRA:
549 case XFS_IOC_FSSETDM:
550 case XFS_IOC_GETBMAP:
551 case XFS_IOC_GETBMAPA:
552 case XFS_IOC_GETBMAPX:
1da177e4
LT		 553 case XFS_IOC_FSCOUNTS:
554 case XFS_IOC_SET_RESBLKS:
555 case XFS_IOC_GET_RESBLKS:
1da177e4 556 case XFS_IOC_FSGROWFSLOG:
1da177e4
LT		 557 case XFS_IOC_GOINGDOWN:
558 case XFS_IOC_ERROR_INJECTION:
559 case XFS_IOC_ERROR_CLEARALL:
4d4be482 560 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 561#ifndef BROKEN_X86_ALIGNMENT
562 /* These are handled fine if no alignment issues */
563 case XFS_IOC_ALLOCSP:
564 case XFS_IOC_FREESP:
565 case XFS_IOC_RESVSP:
566 case XFS_IOC_UNRESVSP:
567 case XFS_IOC_ALLOCSP64:
568 case XFS_IOC_FREESP64:
569 case XFS_IOC_RESVSP64:
570 case XFS_IOC_UNRESVSP64:
571 case XFS_IOC_FSGEOMETRY_V1:
572 case XFS_IOC_FSGROWFSDATA:
573 case XFS_IOC_FSGROWFSRT:
44722352 574 case XFS_IOC_ZERO_RANGE:
4d4be482 575 return xfs_file_ioctl(filp, cmd, p);
e5d412f1 576#else
526c420c
ES		 577 case XFS_IOC_ALLOCSP_32:
578 case XFS_IOC_FREESP_32:
579 case XFS_IOC_ALLOCSP64_32:
580 case XFS_IOC_FREESP64_32:
581 case XFS_IOC_RESVSP_32:
582 case XFS_IOC_UNRESVSP_32:
583 case XFS_IOC_RESVSP64_32:
8c1fdd0b
CH		 584 case XFS_IOC_UNRESVSP64_32:
585 case XFS_IOC_ZERO_RANGE_32: {
d5547f9f 586 struct xfs_flock64 bf;
587
588 if (xfs_compat_flock64_copyin(&bf, arg))
589 return -XFS_ERROR(EFAULT);
526c420c 590 cmd = _NATIVE_IOC(cmd, struct xfs_flock64);
d5547f9f 591 return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf);
592 }
547e00c3 593 case XFS_IOC_FSGEOMETRY_V1_32:
d5547f9f 594 return xfs_compat_ioc_fsgeometry_v1(mp, arg);
471d5910 595 case XFS_IOC_FSGROWFSDATA_32: {
596 struct xfs_growfs_data in;
597
598 if (xfs_compat_growfs_data_copyin(&in, arg))
599 return -XFS_ERROR(EFAULT);
d9457dc0
JK		 600 error = mnt_want_write_file(filp);
601 if (error)
602 return error;
471d5910 603 error = xfs_growfs_data(mp, &in);
d9457dc0 604 mnt_drop_write_file(filp);
471d5910 605 return -error;
606 }
607 case XFS_IOC_FSGROWFSRT_32: {
608 struct xfs_growfs_rt in;
609
610 if (xfs_compat_growfs_rt_copyin(&in, arg))
611 return -XFS_ERROR(EFAULT);
d9457dc0
JK		 612 error = mnt_want_write_file(filp);
613 if (error)
614 return error;
471d5910 615 error = xfs_growfs_rt(mp, &in);
d9457dc0 616 mnt_drop_write_file(filp);
471d5910 617 return -error;
618 }
1da177e4 619#endif
e5d412f1 620 /* long changes size, but xfs only copiese out 32 bits */
621 case XFS_IOC_GETXFLAGS_32:
622 case XFS_IOC_SETXFLAGS_32:
623 case XFS_IOC_GETVERSION_32:
624 cmd = _NATIVE_IOC(cmd, long);
4d4be482 625 return xfs_file_ioctl(filp, cmd, p);
3725867d 626 case XFS_IOC_SWAPEXT_32: {
e5d412f1 627 struct xfs_swapext sxp;
628 struct compat_xfs_swapext __user *sxu = arg;
629
630 /* Bulk copy in up to the sx_stat field, then copy bstat */
631 if (copy_from_user(&sxp, sxu,
632 offsetof(struct xfs_swapext, sx_stat)) ||
633 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat))
634 return -XFS_ERROR(EFAULT);
d9457dc0
JK		 635 error = mnt_want_write_file(filp);
636 if (error)
637 return error;
a133d952 638 error = xfs_ioc_swapext(&sxp);
d9457dc0 639 mnt_drop_write_file(filp);
e5d412f1 640 return -error;
641 }
faa63e95
MM		 642 case XFS_IOC_FSBULKSTAT_32:
643 case XFS_IOC_FSBULKSTAT_SINGLE_32:
644 case XFS_IOC_FSINUMBERS_32:
2ee4fa5c 645 return xfs_compat_ioc_bulkstat(mp, cmd, arg);
1fa503df
MM		 646 case XFS_IOC_FD_TO_HANDLE_32:
647 case XFS_IOC_PATH_TO_HANDLE_32:
d5547f9f 648 case XFS_IOC_PATH_TO_FSHANDLE_32: {
649 struct xfs_fsop_handlereq hreq;
650
651 if (xfs_compat_handlereq_copyin(&hreq, arg))
652 return -XFS_ERROR(EFAULT);
1fa503df 653 cmd = _NATIVE_IOC(cmd, struct xfs_fsop_handlereq);
d5547f9f 654 return xfs_find_handle(cmd, &hreq);
655 }
656 case XFS_IOC_OPEN_BY_HANDLE_32: {
657 struct xfs_fsop_handlereq hreq;
658
659 if (xfs_compat_handlereq_copyin(&hreq, arg))
660 return -XFS_ERROR(EFAULT);
ab596ad8 661 return xfs_open_by_handle(filp, &hreq);
d5547f9f 662 }
663 case XFS_IOC_READLINK_BY_HANDLE_32: {
664 struct xfs_fsop_handlereq hreq;
665
666 if (xfs_compat_handlereq_copyin(&hreq, arg))
667 return -XFS_ERROR(EFAULT);
ab596ad8 668 return xfs_readlink_by_handle(filp, &hreq);
d5547f9f 669 }
ebeecd2b 670 case XFS_IOC_ATTRLIST_BY_HANDLE_32:
ab596ad8 671 return xfs_compat_attrlist_by_handle(filp, arg);
28750975 672 case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
ab596ad8 673 return xfs_compat_attrmulti_by_handle(filp, arg);
710d62aa 674 case XFS_IOC_FSSETDM_BY_HANDLE_32:
ab596ad8 675 return xfs_compat_fssetdm_by_handle(filp, arg);
1da177e4 676 default:
d5547f9f 677 return -XFS_ERROR(ENOIOCTLCMD);
1da177e4 678 }
1da177e4 679}
Linux kernel - Deliverables
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